no error but in complie. Unreal have error :show in photo.
i can’t .I use Visual studio and UE is UE 4.26.2
cpp file
// Copyright GameDev_W8at 2021.
#include “DrawDebugHelpers.h”
#include “Engine/World.h”
#include “GameFramework/PlayerController.h”
#include “Grabber.h”
#define OUT
// Sets default values for this component’s properties
UGrabber::UGrabber()
{
// Set this component to be initialized when the game starts, and to be ticked every frame. You can turn these features
// off to improve performance if you don’t need them.
PrimaryComponentTick.bCanEverTick = true;
// ...
}
// Called when the game starts
void UGrabber::BeginPlay()
{
Super::BeginPlay();
PhysicsHandle = GetOwner()->FindComponentByClass<UPhysicsHandleComponent>();
if (PhysicsHandle)
{
// Physics is Found.
}
else
{
UE_LOG(LogTemp, Error, TEXT("No Physics Handle Componet found on %S!"),GetOwner()->GetName());
}
}
// Called every frame
void UGrabber::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
{
Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
FVector PlayerViewPointLocation;
FRotator PlayerViewPointRotation;
GetWorld()->GetFirstPlayerController()->GetPlayerViewPoint(
OUT PlayerViewPointLocation,
OUT PlayerViewPointRotation
);
/*UE_LOG(LogTemp, Warning, TEXT("Location :%s, Rotation :%s"),
*PlayerViewPointLocation.ToString(),
*PlayerViewPointRotation.ToString()
);*/
FVector LineTraceEnd = PlayerViewPointLocation + PlayerViewPointRotation.Vector() * Reach;
DrawDebugLine(
GetWorld(),
PlayerViewPointLocation,
LineTraceEnd,
FColor(0,255,0),
false,
0.f,
0,
5.f
);
FHitResult Hit;
// Ray-cast out to a certain distance (Reach)
FCollisionQueryParams TraceParams(FName(TEXT("")), false, GetOwner());
GetWorld()->LineTraceSingleByObjectType(
OUT Hit,
PlayerViewPointLocation,
LineTraceEnd,
FCollisionObjectQueryParams(ECollisionChannel::ECC_PhysicsBody),
TraceParams
);
// See what it hits
AActor* ActorHit = Hit.GetActor();
if (ActorHit)
{
UE_LOG(LogTemp, Warning, TEXT("Line trace has hit: %s"), *(ActorHit->GetName()))
}
}
Header file
// Copyright GameDev_W8at 2021.
#pragma once
#include “CoreMinimal.h”
#include “Components/ActorComponent.h”
#include “PhysicsEngine/PhysicsHandleComponent.h”
#include “Grabber.generated.h”
UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )
class BUILDING_ESCAPE_API UGrabber : public UActorComponent
{
GENERATED_BODY()
public:
// Sets default values for this component’s properties
UGrabber();
protected:
// Called when the game starts
virtual void BeginPlay() override;
public:
// Called every frame
virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;
private:
float Reach = 100.f;
UPhysicsHandleComponent* PhysicsHandle = nullptr;
};
